Growing community of inventors

Ehime, Japan

Takashi Fujikawa

Average Co-Inventor Count = 4.00

ph-index = 3

The patent ph-index is calculated by counting the number of publications for which an author has been cited by other authors at least that same number of times.

Forward Citations = 32

Takashi FujikawaYosimasa Simogochi (3 patents)Takashi FujikawaTakeshi Umeda (3 patents)Takashi FujikawaMasahiro Ishibashi (3 patents)Takashi FujikawaTakashi Fujikawa (3 patents)Yosimasa SimogochiYosimasa Simogochi (7 patents)Takeshi UmedaTakeshi Umeda (7 patents)Masahiro IshibashiMasahiro Ishibashi (3 patents)
..
Inventor’s number of patents
..
Strength of working relationships

Company Filing History:

1. Panasonic Corporation (3 from 16,453 patents)


3 patents:

1. 8538056 - Hearing aid

2. D672874 - Eartip retainer for hearing aids

3. D672875 - Eartip retainer for hearing aids

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12/16/2025
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